

Except that a PDF isn’t dynamic. You’d be locked to whatever the page/text ratio was on every unique screen size. Not to mention all of the accessibility you lose because you can’t use a dyslexia-friendly font or increase the font size for bad eyesight.
That’s all before we get into the performance hits. EPUB certainly has its place in the market.
It took me like a month before I was comfortable working with them on my server, but once I finally started figuring it out, I doubt I’ll ever run another server without it haha. All hail docker!